Title:
NONWOVEN WEBS HAVING LIQUID IMPERMEABILITY
Document Type and Number:
WIPO Patent Application WO2001046505
Kind Code:
A3
Abstract:
The invention provides a fabric which acts as a barrier to liquids. The fabric may include a substrate having a coating. More particularly, this invention provides nonwoven webs having liquid impermeability; i.e., nonwoven webs having a resistance to penetration by a liquid which impinges the webs. A porous substrate comprising a fabric having pores with a diameter of less than about 12 micrometers and a surface free energy of less than about 40 dynes/cm is useful in such fabrics. The pore diameter and surface free energy values provide a fabric having (1) a water vapor transmission rate across the fabric greater than about 3000 g/m &hacek& /24 hours, and (2) a rain impact value of less than about 0.5 g at a hydrostatic head of about 91 cm.
Inventors:
GREENE SHARON L
FISH JEFFREY E
YAHIAOUI ALI
KAYLOR ROSANN M
LAU JARK
VARONA GENE
FISH JEFFREY E
YAHIAOUI ALI
KAYLOR ROSANN M
LAU JARK
VARONA GENE
Application Number:
PCT/US2000/034633
Publication Date:
January 03, 2002
Filing Date:
December 20, 2000
Export Citation:
Assignee:
KIMBERLY CLARK CO (US)
International Classes:
D06M14/00; D04H1/42; D04H3/16; D06M15/277; D06M15/643; D06N3/00; D06N3/04; D06N3/12; (IPC1-7): D04H1/56; D06M13/51; D06M15/576; D06M15/643; D06M15/647
Domestic Patent References:
| WO1999022635A2 | 1999-05-14 |
Foreign References:
| US3326713A | 1967-06-20 | |||
| EP0498002A1 | 1992-08-12 | |||
| US5004643A | 1991-04-02 | |||
| US5296282A | 1994-03-22 | |||
| GB2183174A | 1987-06-03 | |||
| EP0893530A1 | 1999-01-27 | |||
| US5027438A | 1991-07-02 | |||
| US5846604A | 1998-12-08 |
Download PDF: